Hot-air attachment



oct. 28, 1930. A, METZ 1,780,092

HOT AIR ATTACHMENT Filed April 25, 1927 'lullin/11111111. W Z

NVENTOR JX wxTNEss=% n ATTORNEY Patented Oct. 2,8, i930,

UNiTEDV STATES PATENT oEFicE ANDREW METZ, or sEwTcxLEY, PENNSYLVANIAYHOT-AIR ATTACHMENT Application led April 25, 1927. Serial No. 186,491;

This invention relates to a hot air attachment for internal combustionengines. is well-known thatthe carbonization on the interior walls ofthe explosion chambers is a source of much annoyance in keeping themoder walls and creates deficient action, not

portional conversion into power of the fuel,

each of hot alr through a -coupling with the carburetor with the arbmored Figure 4 is a median longitudinal sectional f is inserted in andalso racking the mechanism and thereby depleting the equipment.. It isthe object of my invention toremove this diiculty.

I carry out my invention by producing at suction stroke fold to theexplosion chambers. The injector the mouth of the carburetor and 1ssurrounded peripherally by a rotatable sleeve in which a plurality ofair holes from the external air are brought into variations of alignmentwith a sleeve supporting it, said hose being located in the rear of thepoint of delivery of the injector nozzle so as to carry a jet of hotair`into the carburetor for delivery to the explosion chambers of theengine.

The several features of novelty of my invention will be more fullyhereinafter described and the novel features definitely indicated in theappended claim.

In the accompanying drawings igure 1 is a side elevation'partly insection of a decarbonizing system embodying my improvements.

Figure 2 is a side elevation of an injector embodying my improvements.

Figure 3 is a median sectional view of the hose.

view illustrating the detailed construction of the coupling.

Figure 5 is a cross sectional view on a transverse vertical plane of theinjector.

igure 6 is a similar section in the plane of an adjusting slot for thesleeve.

eferring now in particular to the drawautomobiles for blowlng cool airover the engine, and 2 represents the flaring mouth of a metallicconduit 3 preferably formed integral with the exhaust manifold 4 of ahydrocarbon engine.- This conduit terminates near the rear wall of theexhaust manifold inl which I provide an outlet 4a with a threaded tipfor connection with .a flexible hose 5 preferably of metallicsegments,interconnected in the usual form in metallic hose connections and whichis perfectly flexible and may be led by the shortest path to a rightangled coupling 6, into which a pipe 7 connected with the carburetor 8may be united. On the outside of this pipe 7 is sleeved a rotatablecylinder 9 provided with a plurality of air holes l0 and placed inalignment with the corresponding holes l1 in the pipe 7 The cylinder 9has a circumferential slot' l2into which passes a set screw 13 tappedinto the wall of the pipey 7.

he carburetor 8 communicates with the intake manifold 14 and thence withthe explosion chambers of the engine. As thus described, when the engineis in operation a draft of hot air is drawn through the pipe 5 andpasses in a swift jet through the-injector tube 15, which is threaded atits joint with the coupling Gand is set with its delivery end slightlyin advance of the peripheral holes 10 on the sleeve. It will thereforedrawn through the holes l0 and delivered to the carburetor to be mingledin the stream,together with hotv air through pipe 5 in ajet, andpartially vaporized gasoline delivered thereto by the usual form of fuelsupply, and thereby a substantially perfect combustible mixture ma eprovided and the mixture is controlled by the adjustment of the sleeve9.- The mixture supplied by my system effects substantially perfectcombustion and avoids any discharge of monoxide gas from the exhaustwhich is the source of so many fatalities. Moreover, the device reducescarbon to a minimum and 'f thereby prevents overheating of the cylindersand reduces oil consumption, which will result in maintaining theviscosity of the oil and promoting a better action of the motor. All ofthese results follow from a better mixture and temperature of the gasesled into the cylinder with the companion elements of oxygen, hydrogenand nitrogen properly balanced for perfect combustion.

On account of the liquid fuel being fully gasied in the firing chambers,there will be no ungasiied fuel to pass down between the piston andcylinder walls to kill the viscosity of the oil in the crank case.Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is An attachment for an internal combustion enine comprisin a conduit formed with the ex aust manifol of the engine, aflared mouth for said conduit and being arranged in the path of the fanof the cooling system of the engine, a flexible pipe in connection withthe rear end of said conduit, a coupling on said flexible pipe, a pipein communication with the carburetor of the engine and formed with thecoupling, a tube threadedly secured to the coupling and extending intothe last mentioned pipe centrally thereof, and in ya. manner to bedirected toward the carburetor, a sleeve mounted on the last mentionedpipe and being formed with openings arranged so as to register with likeopenings in the last mentioned pi e, said sleeve being rotatably mountedto a just the position of the openings with respect to each other, andmeans to retain the s eeve in adjusted ositions and including a headedset screw t readedly secured in the last mentioned pipe and passingthrough a slot formed in the sleeve.

In testimony whereof I aix mysignature.

- ANDREW METZ.

